Proportional flap knob....
Sometime after I bought my XF631 I realized that its use for a model with flaps is a bit limited as it has a two position switch instead of a proportional knob for flaps.
Looks like I have two options:
1. Can the XF631 (or other similar 6 channel radios) be upgraded to have a proportional flap dial?
2. Which JR radio is the least expensive which has proportional auxiliary channels?